Question

What are the various techniques to control water pollution?

Answer 1

1. Chemical treatment: Chemical treatment removes solids from water. It involves coagulation, flocculation, and sedimentation. Chemical treatment methods include sand and pressure filtering, iron removal, and defluorination.
2. Biological treatment: Biological therapy is a natural procedure for decomposing organic material. This treatment uses bacteria and other tiny organisms to break down organic waste. Aerobic and anaerobic treatments are often utilised, depending on the availability of oxygen.